SS30

No.A1878-4/7

Block Diagram

Pin Functions

Pin No.

Pin name

Function

Equivalent circuit

1

VM

Power supply for the IC and motor. It is

short-circuited and uses it with power supply small

signal pin VCC (pin 2). A capacitor must be

connected between this pin and ground.

20

18

17

UO

VO

WO

Output pins.

Connect the motor coil.

16

RF

Output current detection.

The drive current is detected by connecting a

resistor between this pin and ground.

1

16

17

18

20

2

VCC

Power supply for the IC and motor. A capacitor must

be connected between this pin and ground.

3

COM

Motor middle point connection.

4

COMIN

Motor position detection comparator filter pin.

It is short-circuited and uses it with motor power

supply pin VM (pin 1). A capacitor must be

connected between this pin and the FIL pin (pin 5).

5

FIL

Motor position detection comparator filter pin.

A capacitor must be connected between this pin and

the COMIN pin (pin 4).

WO

VO

VG

UO

3

4

5

Continued on next page.

WO

VO

UO

RF

COM

COMIN

FIL

OSC

VG

CP

CPC

SUBGND

FG

PWM

FR

LOCK PROTECT

LOGIC

CURRENT

LIMITTER

PRE DRIVE

MOSC

1/N

TSD

SELECTOR

OSC

CHARGE

PUMP

VREF

VG

SENSORLESS

LOGIC

VM

RD

1/2FG